mercruiser tachometer wiring diagram

• 2023-07-03

Most frequency converters have wiring terminals for external digital display meters, include the mercruiser tachometer , which can be set to output current signals or voltage signals , as well as output functions such as line speed , frequency , power , voltage , and other information . In addition, the terminal of the external frequency meter can also be used to set the display function when its output is a pulse signal . 

The crankshaft speed position sensor is available in both magnetoelectric and Hall type. There are both 2-wire and 3-wire versions of the magnetoelectric type, and both 2-wire wires are signal wires connected to the ECU; Two of the three wire system are signal wires, and the other one is signal shielding wire . The Hall type is a 3-wire system, with two forming a power supply circuit and another signal wire. The camshaft phase sensor and crankshaft speed position sensor are the same, including magnetoelectric and Hall type sensors . Knock sensors are available in single wire , 2-wire, and 3-wire versions . A single wire system involves connecting a signal wire to the ECU and grounding the ground wire . One of the two wire systems is a signal wire connected to the ECU, and the other is a ground wire that is also connected to the ECU . One of the 3-wire system is a signal wire connected to EC , one is a ground wire connected to ECU , and the other is a signal shielding wire.

The digital mercruiser tachometer uses light-emitting diode (LED) and Nixie tube as display devices, and built-in high-performance single-chip microcomputer as signal processing and control unit. It is small in size , powerful in function , accurate in measurement , and exquisite in display effect. According to the different usage scenarios, it can be divided into two types : for automobiles and motorcycles. The main features are: 1. The curved LED light column dynamically displays the speed . 2. The four digit Nixie tube can display the time, speed and accumulated working time of the engine through key setting (it can still be maintained after power failure) . 3. Overspeed warning function . 4. The cylinder number setting function makes it easy to adapt to various vehicle models . 5. Flexible signal input method, easy to install and use . 6. Demonstration mode function.